EP0101350B1 - Procédé et dispositif d'extraction d'un coffrage dans le cadre de la réalisation d'une paroi moulée dans le sol - Google Patents

Procédé et dispositif d'extraction d'un coffrage dans le cadre de la réalisation d'une paroi moulée dans le sol Download PDF

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Publication number
EP0101350B1
EP0101350B1 EP83401474A EP83401474A EP0101350B1 EP 0101350 B1 EP0101350 B1 EP 0101350B1 EP 83401474 A EP83401474 A EP 83401474A EP 83401474 A EP83401474 A EP 83401474A EP 0101350 B1 EP0101350 B1 EP 0101350B1
Authority
EP
European Patent Office
Prior art keywords
shuttering element
implement
panel
shaped parts
wings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP83401474A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0101350A1 (fr
Inventor
Paul Dupeuble
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bachy Sa
Soletanche Bachy France
Original Assignee
SIF ENTREPRISE BACHY
Sondages Injections Forages SIF Enterprise Bachy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SIF ENTREPRISE BACHY, Sondages Injections Forages SIF Enterprise Bachy filed Critical SIF ENTREPRISE BACHY
Priority to AT83401474T priority Critical patent/ATE19803T1/de
Publication of EP0101350A1 publication Critical patent/EP0101350A1/fr
Application granted granted Critical
Publication of EP0101350B1 publication Critical patent/EP0101350B1/fr
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/18—Bulkheads or similar walls made solely of concrete in situ
    • E02D5/182—Bulkheads or similar walls made solely of concrete in situ using formworks to separate sections
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/18—Bulkheads or similar walls made solely of concrete in situ
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof

Definitions

  • the invention relates to a method and device for extracting a formwork in the context of producing a wall molded in the ground.
  • the walls molded into the ground are executed in a conventional manner by elementary panels, either alternating or successive.
  • the ground side is generally put in place, that is to say at the two ends of the primary panels in the case of an embodiment by alternating panels, at only one end of the panels in in the case of an embodiment by successive panels, a formwork making it possible to obtain a generally concave footprint over the entire height of the concrete panel.
  • the next panel is then excavated and concreted against the cavity thus formed, of course after removal of the formwork, which makes it possible to obtain a geometrically well defined joint.
  • the forms used to date have cross sections of various shapes, the simplest of which is a circle. They can be classified into two radically different types of implementation.
  • Formwork of the first type used very generally, is intended to be extracted as sliding formwork, that is to say by traction in the direction of their length. It is therefore imperative to extract them before the concrete has set completely, otherwise the adhesion forces are much too considerable to hope for a tearing off under these conditions, but nevertheless after a start of stiffening of the concrete to avoid sagging of this last in the vacuum resulting from the extraction of the tube. It is understandable that the choice of the favorable moment for this extraction is always difficult because it depends on many factors of variable importance (nature and dosage of the cement, temperature, speed of concreting, etc.).
  • the empty volume left at the end of the panel by the extraction of the formwork facilitates the execution of the excavation of the following consecutive panel.
  • the excavation tool naturally guides itself in the empty volume thus reserved, guaranteeing the geometric continuity of the wall. It can thus even remove without major difficulties areas of concrete that may have been able to bypass the formwork due to geometric irregularities of the excavation in which the panel previously made was molded.
  • Formwork of the second type also makes it possible to obtain a generally concave footprint over the entire height of the concrete panel, but is not removed like slippery formwork before the concrete has set completely.
  • a formwork of this second type is left in place until the latter is taken and the following consecutive panel is excavated until it comes into contact.
  • the present invention aims to provide a method and device combining the advantages of the two types of formwork described above while not having the disadvantages, and going even further in the way of simplification of construction and use.
  • the invention is intended to be implemented with a formwork element comprising a profiled central part whose profile corresponds to the imprint, usually concave, which it is desired to impart to the end of the panel to be produced, and two wings located on either side of the central part.
  • the wings can also be flat or profiled.
  • the wings can form an angle with the faces of the central part or be located in the extension of these.
  • the invention also covers the tool used in the implementation of the method of the invention and defined above.
  • the body of the tool has at its lower part a blade scraping the non-concreted face of the formwork element, this blade may optionally include teeth.
  • This blade is to eliminate all the concrete packets which could have bypassed the formwork element during the casting of the panel. At the same time, it performs a possible recalibration role for the excavation where the next panel will be poured.
  • the threshing movement can be imparted to the tool by a winch which, in turn, lifts the latter and then lets it fall with all its weight.
  • the tool must have a large mass, for example at least one ton, to be effective. Most often, the tool will be made of steel. We can, if desired, incorporate a lead ballast.
  • the body shape of the tool is not critical. It can be solid or hollow (for example open at its upper and lower faces so as to allow the free passage of the excavated mud).
  • a threshing device with compressed air incorporated in the tool itself or use an auxiliary threshing device, such as a sheep striking the tool and gradually pushing it between the formwork element and concrete.
  • the body of the tool is constituted by the excavating bucket itself.
  • the grooves forming corners to allow the guidance of the bucket on the formwork element.
  • the bucket is used in the open position, the leading edge of the bucket of the bucket located on the side of the formwork element then playing the role of the optional scraping blade mentioned above.
  • Figure 1 is a side view of a tool according to the invention, mounted on a formwork element.
  • Figure 2 is a sectional view along line II-II of Figure 1.
  • Figure 3 is a sectional view along line III-III of Figure 2.
  • Figures 4a, 4b, 5, 6a and 6b illustrate schematically the implementation of the method of the invention in the context of the execution of a wall molded into the ground.
  • Figures 4a, 5 and 6a are elevational views in partial section while Figures 4b and 6b are views in horizontal section along lines b-b of Figures 4a and 6a, respectively.
  • FIG. 1 a formwork tool according to the invention.
  • This tool comprises a body 1, for example of solid steel, of a large mass (1 ton and more) and two lateral profiled parts 2 integral with the body and constituting vertical grooves which can be mounted and slide on the formwork element 3 , more particularly on the wings 4 thereof, as can be seen in FIG. 2.
  • the width of the formwork element must be less than the width of the excavation so as to provide each bank a play of the order of 2 to 3 cm allowing the tool of the invention to slide.
  • the lower part of the body 1 is shaped so as to form a blade 5 which is in scraping contact with the face of the non-concreted formwork element.
  • the parts 2 forming the tool's guide grooves on the wings 4 are bevelled at their lower part so as to form shuttering corners 6.
  • the tool can be suspended from the cable of a winch by ears such as 7 provided at the upper part of the body.
  • Figures 4a and 4b show a wall molded into the ground during execution. More particularly, we see a panel P which has just been produced with the formwork element 3 still in place at its end. The excavation E into which the next panel will be poured has also been carried out, in a conventional manner, under bentonite mud (not shown) to avoid possible landslides. The height of the formwork element 3 is greater than the depth of the excavation so that it projects above the ground. A projection of the order of 1 to 2 meters is generally sufficient.
  • the formwork element 3 used has a convex body C so as to leave a concave imprint in the concrete of each panel.
  • a longitudinal slot provided in the body C allows the installation of a conventional seal J of the "water stop" type.
  • the tool of the invention When it is desired to extract the formwork element 3, the tool of the invention is mounted on the part of the element which projects above the ground, the wings 4 being engaged in the grooves 2 so that the tool can slide, with positive guidance, along the formwork element.
  • the tool is suspended from a winch by a cable 8, as shown.
  • a threshing action is imparted to the tool by lifting and letting fall with its full weight, alternatively, the tool.
  • the bevelled parts forming corners 6 are inserted between the concrete panel and the formwork element and cause the latter to become detached as the tool progresses towards the bottom of the trench.
  • the blade 5 destroys any concrete packets which could have bypassed the formwork element during the casting of the pan neau P, would not have already been eliminated during the excavation E, and could constitute a hindrance to the extraction of the formwork element.
  • This blade also allows possible recalibration of the excavation E if it had deviated a little from its theoretical position.
  • the formwork element When the tool reaches the bottom of the excavation, the formwork element is released over its entire height and can be extracted easily. Often, it is even necessary, before the end of the operation, to secure the formwork element on the surface by means of a cable, such as 9, to avoid an uncontrolled tilting of the latter in the excavation E.
  • the seal J does not run any risk of deterioration.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)
  • Load-Bearing And Curtain Walls (AREA)
  • Door And Window Frames Mounted To Openings (AREA)
  • Fencing (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Sewage (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Continuous Casting (AREA)
EP83401474A 1982-08-11 1983-07-19 Procédé et dispositif d'extraction d'un coffrage dans le cadre de la réalisation d'une paroi moulée dans le sol Expired EP0101350B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83401474T ATE19803T1 (de) 1982-08-11 1983-07-19 Verfahren und vorrichtung zum ausziehen der schalung bei der herstellung einer unterirdischen schlitzwand.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8213994 1982-08-11
FR8213994A FR2531733A1 (fr) 1982-08-11 1982-08-11 Procede et dispositif d'extraction d'un coffrage dans le cadre de la realisation d'une paroi moulee dans le sol

Publications (2)

Publication Number Publication Date
EP0101350A1 EP0101350A1 (fr) 1984-02-22
EP0101350B1 true EP0101350B1 (fr) 1986-05-14

Family

ID=9276806

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83401474A Expired EP0101350B1 (fr) 1982-08-11 1983-07-19 Procédé et dispositif d'extraction d'un coffrage dans le cadre de la réalisation d'une paroi moulée dans le sol

Country Status (10)

Country Link
EP (1) EP0101350B1 (xx)
JP (1) JPS5991227A (xx)
AT (1) ATE19803T1 (xx)
AU (1) AU561836B2 (xx)
DE (1) DE3363511D1 (xx)
FR (1) FR2531733A1 (xx)
HK (1) HK27787A (xx)
MY (1) MY8700396A (xx)
PT (1) PT77174B (xx)
SG (1) SG97886G (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10988911B2 (en) 2017-04-26 2021-04-27 Ccmj Systems Ltd Diaphragm walls
US11225769B2 (en) 2018-02-15 2022-01-18 Ccmj Systems Ltd Shear key former apparatus and method(s)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2628772B1 (fr) * 1988-03-18 1990-08-24 Sif Entreprise Bachy Systeme de guidage de l'outil d'excavation utilise pour la realisation d'une paroi moulee dans le sol
DE69107696T2 (de) * 1990-06-15 1995-06-29 Bouygues Sa yinrichtung zum Erleichtern des Herausziehens einer Schalung, und Verwendung zum Herstellen einer Bodenschlitzwand.
FR2674888B1 (fr) * 1991-04-02 1995-12-22 Bouygues Sa Dispositif pour faciliter l'extraction d'un coffrage, outil present dans le dispositif et application a la realisation d'une paroi moulee dans le sol.
AU623298B1 (en) * 1991-01-22 1992-05-07 Frankipile Australia Pty. Limited Concrete shuttering element
FR2675526A1 (fr) * 1991-04-19 1992-10-23 Sif Entreprise Bachy Procede de guidage de l'outil d'excavation utilise pour la realisation d'une paroi moulee dans le sol, et outil d'excavation pour la mise en óoeuvre de ce procede.
FR2676763B1 (fr) * 1991-05-23 1993-08-13 Sol Cie Procede pour decoller un joint d'extremite de panneau lors de la realisation de parois moulees dans le sol et joint pour la mise en óoeuvre de ce procede.
JPH0548807U (ja) * 1991-12-03 1993-06-29 釜屋化学工業株式会社 抗菌性コンパクト容器
GB9616040D0 (en) * 1996-07-31 1996-09-11 Tsw Partnership The Improved stop-end system for use in diaphragm wall construction
GB2325262B (en) 1997-05-12 2001-05-02 Kvaerner Cementation Found Ltd Hydrophilic waterbar for diaphragm wall joints
IT1294756B1 (it) * 1997-09-12 1999-04-12 Finic Bv Tubo spalla a due ali per la formazione delle superfici di giunzione fra elementi di pareti gettate in calcestruzzo
DE19817982C1 (de) 1998-04-22 1999-11-18 Leffer Stahl & App Schalungselement einer Flachfugenschalung und Verfahren zu dessen Ausbau
DE19901556B4 (de) * 1999-01-16 2004-02-19 Brückner Grundbau GmbH Vorrichtung und Verfahren zum Entfernen von Überbeton im Bereich einer Schlitzwandfuge
GB2371069B (en) 2001-01-15 2004-09-08 Cementation Found Skanska Ltd Waterstop for foundation elements
GB201112136D0 (en) 2011-07-14 2011-08-31 Coupland John W Diaphragm wall apparatus and methods
FR3041976B1 (fr) 2015-10-06 2017-11-24 Soletanche Freyssinet Quai portuaire constitue de parois voutees et de tirants plans
FR3110922B1 (fr) 2020-05-29 2022-10-14 Soletanche Freyssinet Elément d’armatures pour paroi moulée muni d’un porte-joint d’étanchéité

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT213792B (de) * 1958-07-30 1961-02-27 Ignaz Dipl Ing Zeissl Verfahren zur Herstellung von Beton-, Dichtungs- oder Filterwänden im Boden
FR1363217A (fr) * 1963-04-05 1964-06-12 Intrafor Perfectionnements apportés aux moyens excavateurs pour abattre un front de taille, notamment pour creuser une tranchée
FR1454173A (fr) * 1965-11-09 1966-07-22 Tot Aanneming Van Werken Voorh Procédé de construction d'un mur d'étanchéité en béton, gabarit destiné à être utilisé pour la mise en oeuvre de ce procédé, et mur d'étanchéité construit au moyen de ce procédé
FR2473091A1 (fr) * 1980-01-08 1981-07-10 Sif Entreprise Bachy Dispositif de coffrage autodecoffrant utile pour la realisation d'une paroi moulee dans le sol

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10988911B2 (en) 2017-04-26 2021-04-27 Ccmj Systems Ltd Diaphragm walls
US11225769B2 (en) 2018-02-15 2022-01-18 Ccmj Systems Ltd Shear key former apparatus and method(s)

Also Published As

Publication number Publication date
DE3363511D1 (en) 1986-06-19
AU561836B2 (en) 1987-05-21
JPS6145014B2 (xx) 1986-10-06
HK27787A (en) 1987-04-16
MY8700396A (en) 1987-12-31
EP0101350A1 (fr) 1984-02-22
PT77174B (fr) 1986-03-11
PT77174A (fr) 1983-09-01
FR2531733A1 (fr) 1984-02-17
JPS5991227A (ja) 1984-05-25
FR2531733B1 (xx) 1984-12-21
SG97886G (en) 1988-05-20
AU1719583A (en) 1984-02-16
ATE19803T1 (de) 1986-05-15

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